A caregiver is accused of trying to kill an elderly couple in Pennsylvania by lacing their cigarettes with rat poison.

A 73-year-old woman in Northumberland County told authorities last Friday that she found an unknown green substance in cigarettes that were rolled for her by Tina Young, who takes care of her 80-year-old husband.

When confronted by investigators, Young admitted to putting ground-up pieces of rodent poison with the loose tobacco in the cigarettes she rolled for the couple in an attempt to kill them for having her fired from her job, according to the incident report from the Pennsylvania State Police.